ATE349681T1 - OPTICAL ENCODER FOR OPERATING AN ELECTRIC MOTOR - Google Patents
OPTICAL ENCODER FOR OPERATING AN ELECTRIC MOTORInfo
- Publication number
- ATE349681T1 ATE349681T1 AT96908483T AT96908483T ATE349681T1 AT E349681 T1 ATE349681 T1 AT E349681T1 AT 96908483 T AT96908483 T AT 96908483T AT 96908483 T AT96908483 T AT 96908483T AT E349681 T1 ATE349681 T1 AT E349681T1
- Authority
- AT
- Austria
- Prior art keywords
- detector
- pattern
- function
- optical encoder
- radiant energy
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 title abstract 5
- 125000004122 cyclic group Chemical group 0.000 abstract 2
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
- G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
- G01P3/486—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by photo-electric detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/347—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
- G01D5/3473—Circular or rotary encoders
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/36—Forming the light into pulses
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optical Transform (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
Optical encoder apparatus and methods are provided for converting the cyclic motion of an electro-mechanical machine, such as an electric motor, into at least one electrical signal having a predetermined waveform. The apparatus may include at least one photo-detector which is responsive to at least one pattern of incident radiant energy. An optically programmed system is optically aligned with the detector, and configured to be actuated by the cyclic motion of the machine. The system modifies at least one pattern of incident radiant energy at the detector, in a plurality of directions, in accordance with an optical function which includes graphical function. The graphical function may be a transform of a waveform function. The system includes an optical element, such as an optical encoder disc, which contains at least one optically detectable graphical pattern. The system also includes a mask containing at least one aperture which permits a pattern of radiant energy to pass to the detector. The energy at the photo-detector is converted into an electrical signal having a predetermined waveform.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US39447395A | 1995-02-27 | 1995-02-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE349681T1 true ATE349681T1 (en) | 2007-01-15 |
Family
ID=23559096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT96908483T ATE349681T1 (en) | 1995-02-27 | 1996-02-27 | OPTICAL ENCODER FOR OPERATING AN ELECTRIC MOTOR |
Country Status (8)
Country | Link |
---|---|
US (1) | US5665965A (en) |
EP (1) | EP0885376B8 (en) |
JP (1) | JP4377427B2 (en) |
CN (2) | CN1256571C (en) |
AT (1) | ATE349681T1 (en) |
CA (1) | CA2247353C (en) |
DE (1) | DE69636794T2 (en) |
WO (1) | WO1996027118A1 (en) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07337076A (en) * | 1994-06-07 | 1995-12-22 | Matsushita Electric Ind Co Ltd | Three-phase brushless servo motor |
US6087654A (en) * | 1995-02-27 | 2000-07-11 | Opto Generic Devices, Inc. | Encoder apparatus and methods |
JPH10253398A (en) * | 1997-03-11 | 1998-09-25 | Nikon Corp | Rotary encoder |
GB2347492A (en) * | 1999-02-01 | 2000-09-06 | Hohner Automation Ltd | Optical encoder with variable phase sinusoidal output |
DE19944004A1 (en) * | 1999-09-14 | 2001-03-15 | Kostal Leopold Gmbh & Co Kg | Optoelectronic rotation angle sensor |
DE10016959B4 (en) * | 2000-04-06 | 2006-12-14 | Pwb-Ruhlatec Industrieprodukte Gmbh | Device for positioning rectilinearly or rotationally moving machine parts |
JP2002156248A (en) * | 2000-11-20 | 2002-05-31 | Seiko Instruments Inc | Electronic apparatus with position detector |
US6600150B1 (en) | 2001-07-03 | 2003-07-29 | Lexmark International, Inc. | Encoder systems for printers and related methods |
DE10246268B4 (en) * | 2002-10-02 | 2004-11-18 | Pwb-Ruhlatec Industrieprodukte Gmbh | encoder arrangement |
US7375488B2 (en) * | 2003-11-04 | 2008-05-20 | Dynamoters, Inc. | Brushless repulsion motor speed control system |
US7797080B2 (en) | 2004-06-14 | 2010-09-14 | Ogd V-Hvac Inc. | Opto-programmed HVAC controller |
WO2006107363A1 (en) * | 2005-03-30 | 2006-10-12 | Samuel Hollander | Imaging optical encoder |
US7710553B2 (en) * | 2005-03-30 | 2010-05-04 | Samuel Hollander | Imaging optical encoder |
US7668608B2 (en) * | 2006-09-01 | 2010-02-23 | Fisher-Rosemount Systems, Inc. | Graphical programming language object editing and reporting tool |
GB0906258D0 (en) | 2009-04-08 | 2009-05-20 | Renishaw Plc | Position encoder apparatus |
GB0906257D0 (en) | 2009-04-08 | 2009-05-20 | Renishaw Plc | Position encoder apparatus |
WO2011020058A1 (en) * | 2009-08-14 | 2011-02-17 | Opto Generic Devices, Inc. | Intelligent total air climate & cleaning conditioner |
TW201121531A (en) * | 2009-12-31 | 2011-07-01 | xiang-ling Xu | Auxiliary driving device for wheelchair. |
US20140003614A1 (en) * | 2011-12-12 | 2014-01-02 | Alex Levitov | Neonatal incubator |
WO2013103865A1 (en) | 2012-01-05 | 2013-07-11 | Opto Generic Devices, Inc. | Controlled resonance in electrical power devices |
CN103791936B (en) * | 2014-01-23 | 2016-03-02 | 中国科学院长春光学精密机械与物理研究所 | The restorative procedure of space flight level absolute optical encoder signal |
EP2905882B1 (en) * | 2014-02-10 | 2022-03-30 | Siemens Aktiengesellschaft | Detection of a kinematic condition of a rotatable machine component |
FR3044400B1 (en) * | 2015-11-26 | 2017-12-29 | Alstom Transp Tech | IMPROVED OPTICAL ODOMETER |
US11990801B2 (en) * | 2019-08-07 | 2024-05-21 | Wisconsin Alumni Research Foundation | Single substrate resolver/rectifier for brushless wound field synchronous machines |
Family Cites Families (35)
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US3193744A (en) * | 1958-04-29 | 1965-07-06 | Harold H Seward | Optical synchro system |
US3728551A (en) * | 1969-10-22 | 1973-04-17 | Southwestern Ind Inc | Mask adjustment mechanism |
US3634672A (en) * | 1970-02-24 | 1972-01-11 | Preston A Weatherred Jr | Product function root extractor |
US3757128A (en) * | 1972-03-20 | 1973-09-04 | Ibm | Multiphase tachometer |
US4008425A (en) * | 1975-01-09 | 1977-02-15 | Ampex Corporation | Motor servo system with multiplier means to drive and servo the motor |
US4160200A (en) * | 1976-06-29 | 1979-07-03 | Ricoh Company, Ltd. | Servo control apparatus |
US4158800A (en) * | 1976-10-26 | 1979-06-19 | Ncr Corporation | Control system |
US4190793A (en) * | 1977-10-06 | 1980-02-26 | Louis W. Parker | Energy economizer for induction motors |
US4225787A (en) * | 1977-11-02 | 1980-09-30 | The Machlett Laboratories, Inc. | X-ray tube control system |
US4227137A (en) * | 1978-05-30 | 1980-10-07 | Hartman Metal Fabricators, Inc. | Digital tach and slip signal motor control |
US4224515A (en) * | 1978-10-27 | 1980-09-23 | The United States Of America As Represented By The Secretary Of The Air Force | High accuracy optical shaft encoder system |
US4286203A (en) * | 1979-03-14 | 1981-08-25 | Beckman Instruments, Inc. | Slip frequency control for variable speed induction motors |
US4236043A (en) * | 1979-04-13 | 1980-11-25 | The United States Of America As Represented By The Secretary Of The Navy | Frequency compression and expansion using an electrooptical processor |
JPS5791683A (en) * | 1980-11-28 | 1982-06-07 | Hitachi Ltd | Control circuit of dc brushless motor |
US4353016A (en) * | 1981-04-22 | 1982-10-05 | Minnesota Mining And Manufacturing Company | Linear motor control system for brushless DC motor |
US4429267A (en) * | 1981-06-22 | 1984-01-31 | Manhattan Engineering Company, Inc. | Digital positioning systems having high accuracy |
US4438376A (en) * | 1981-12-24 | 1984-03-20 | General Electric Company | Variable slip controller for an AC motor |
JPS59222089A (en) * | 1983-05-31 | 1984-12-13 | Sharp Corp | Positioning control system of dc motor |
US4588936A (en) * | 1983-06-02 | 1986-05-13 | Sharp Kabushiki Kaisha | Digitalized position control for a D.C. motor |
US4599547A (en) * | 1984-10-23 | 1986-07-08 | Ncr Canada Ltd-Ncr Canada Ltee | Fine-coarse positioning control system with easy adjustment |
US4717864A (en) * | 1985-07-05 | 1988-01-05 | Pertec Peripherals Corporation | Speed control method and apparatus for electronically commutated motors |
FR2585858B1 (en) * | 1985-07-30 | 1987-12-24 | Ernst Marc | CONTROL OF A REVERSIBLE MOTOR BY ANY STEP MOTOR. |
JPS6255511A (en) * | 1985-09-05 | 1987-03-11 | Sharp Corp | Rotary encoder |
AU616640B2 (en) * | 1986-10-17 | 1991-11-07 | Global Holonetics Corporation | Transform optical processing system |
KR890004099B1 (en) * | 1987-04-22 | 1989-10-20 | 이이수 | D.c. multi-phase bi-polar brushless motor |
US4864300A (en) * | 1987-06-18 | 1989-09-05 | Trw Inc. | Rotating high-resolution shaft encoder utilizing capacitive sensing |
US5059876A (en) * | 1987-12-10 | 1991-10-22 | Shah Emanuel E | Brushless rotating electrical machine |
JPH01196515A (en) * | 1988-02-01 | 1989-08-08 | Fuji Electric Co Ltd | Photoelectric conversion type rotary position detector |
JPH03242713A (en) * | 1990-02-20 | 1991-10-29 | Olympus Optical Co Ltd | Driving controller |
JPH0471386A (en) * | 1990-07-09 | 1992-03-05 | Yamamoto Denki Kk | Controller for synchronous motor |
DE4036024C1 (en) * | 1990-11-13 | 1992-02-27 | Heidelberger Druckmaschinen Ag, 6900 Heidelberg, De | |
US5103225A (en) * | 1990-12-24 | 1992-04-07 | Pitney Bowes Inc. | Motor-driven positioning system with reflective optical encoder |
US5172039A (en) * | 1991-09-16 | 1992-12-15 | Staodyn, Inc. | Device utilizing capacitive coupling to provide an output indicative of angular relationship |
US5177393A (en) * | 1991-09-24 | 1993-01-05 | Gary Webber | Optically commutated dc motor |
US5336956A (en) * | 1992-11-23 | 1994-08-09 | Lambert Haner | Brushless dynamo machine with novel armature construction |
-
1996
- 1996-02-27 AT AT96908483T patent/ATE349681T1/en not_active IP Right Cessation
- 1996-02-27 CN CN200310103682.0A patent/CN1256571C/en not_active Expired - Fee Related
- 1996-02-27 EP EP96908483A patent/EP0885376B8/en not_active Expired - Lifetime
- 1996-02-27 DE DE69636794T patent/DE69636794T2/en not_active Expired - Lifetime
- 1996-02-27 WO PCT/US1996/002275 patent/WO1996027118A1/en active IP Right Grant
- 1996-02-27 CA CA002247353A patent/CA2247353C/en not_active Expired - Lifetime
- 1996-02-27 CN CN2006100741095A patent/CN1982851B/en not_active Expired - Fee Related
- 1996-09-05 US US08/711,629 patent/US5665965A/en not_active Expired - Lifetime
-
2007
- 2007-12-04 JP JP2007314021A patent/JP4377427B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2247353A1 (en) | 1996-09-06 |
CN1256571C (en) | 2006-05-17 |
CA2247353C (en) | 2001-08-14 |
JP4377427B2 (en) | 2009-12-02 |
JP2008118853A (en) | 2008-05-22 |
DE69636794T2 (en) | 2007-10-11 |
EP0885376B1 (en) | 2006-12-27 |
EP0885376B8 (en) | 2007-02-28 |
CN1982851A (en) | 2007-06-20 |
EP0885376A1 (en) | 1998-12-23 |
CN1501051A (en) | 2004-06-02 |
CN1982851B (en) | 2012-08-15 |
WO1996027118A1 (en) | 1996-09-06 |
EP0885376A4 (en) | 2001-09-12 |
US5665965A (en) | 1997-09-09 |
DE69636794D1 (en) | 2007-02-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RER | Ceased as to paragraph 5 lit. 3 law introducing patent treaties |